Steam-generating furnace.



No. 727,346. PATENTED MAY 5, 1903..

J. L. GIROUX. STEAM GENERATING FURNACE APPLIOATIOR' I'ILED JAN. 2, 1903.

N0 MODEL. 2 SHEETS-SHEET L No. 727,346. I PATENJIED MAY 5, 1903.

- J. GIROUX. STEAM GENERATING FURNACE.

APPLICATION IILED JAN. 2, 1903.

10 MODEL. 2 SHEETS-SHEET 2- UNrrn STATES Patented May5,'1903 PATENT OFFICE.

STEAM-GENERATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 727,346, dated May 5, 1903.

Application filed January 2,1903. Serial No. 137,4:67. (No model) 7 T0 aZZ whom it may concern: A v

Be it known that I, JOSEPH L. GIRO UX,a citi- Zen of the United States, residing at Jerome, county ot'Yavapai, Territory of Arizona, have invented an Improvement in Steam-Generating Furnaces; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a combination furnace and steam-generator in which a crucible occupies the lower part of the furnace, and above this are a series of approximately vertical water-tubes connected at the lower end with a water-supply pipe and at the upper end with a steam-drum.

My present invention consists in the combination with these water-tubes of a series of inclosingwater-jackets properly spaced to allow the water-tubes to pass between the water-jacket sections and communicate with the water-supply and steam-drum which are exterior thereto.

My invention also comprises detailsot'construction, which will be more fully explained by reference to the accompanying drawings, in which Figure 1 is a side elevation in partial section. Fig. 2 is an end elevation in partial section.

My present invention is an improvement upon patent issued to me November 11, 1902, Serial No. 713,296

A is a crucible supported upon a suitable base and constructed in a manner similar to the class of vertical furnaces to which it is applicable. Above this crucible is a rectangular water-jacket section 2, and above the section 2 are the sections 2 and 2 ,forming a complete inclosure. These sections are all supplied with water by pipes or passages not here shown, and the temperature of the water is gradually raised in these jacket-sections and conveyed therefrom to a suitable storage-tank from which it is deliveredinto a feed-pipe 14: surrounding the lower part of the furnace.

From this feed-pipe the water is conveyed into the approximately vertical pipes 8, which surround the furnace interior to the waterjackets previously described, and the water previously heated in the jackets rising through the tubes 8 is delivered from the upper end into a steam-drum 17, which surrounds the upper part of the furnace. Connectionis made between the pipe 14 and the steam-drum 17 by means of pipes, as at 13, so that a complete circulation may be had and the water converted into steam, which is delivered from the drum 17through a discharge pipe or passage, as at 18, which conveys it to the point where it is to be used.

In my present invention I have shown the water jacket sections 2 and 2 separated, forming a channel or open space through which the lower ends of the pipes 8 pass from the supply of the feed-pipe 14 into the space within the water-jacket. The adjacent edges of these jacket-sections are beveled, as plainly shown, so that the pipes 8 may be bent into a continuous curve or otherwise formed to pass through the spaces. The upper end of the water-jacket section 2 is also beveled where the pipes 8 bend outwardly over the top to connect with the steam-drum 17.

i The water-tubes 8 in the present case have a sufficient space between them to admit of their being screwed or connected to the steamdrum and the water-feed 14, and thus easily removed or replaced when desired, and as they are surrounded by the water-jackets the latter form an inclosing jacketrfor the tubes. At the same time a suffieientamount of heat will pass between the tubes to properly heat thewater in the jacket-sections, while the more intense heat acting upon the tubes will convert the Water passing through them into steam, which is delivered into the steamdrum 17. The spaces between the tubes in channel between the first and second waterjackets are closed by any suitable heat-resisting material.

The air or bustle pipe 31, which is supplied by any suitable blast apparatus, is connected by pipes, as 32, with twyers 3, which pass through the water-jacket section 2 and discharge the air-blast into the interior ofthe furnace, as shown in my previous patent.

It will be understood that the circulation within the water-jacket sections is independent of that in the tubes 8 for the reason that no pressure is maintained in the water-jackets; but pressure is maintained in the tubes where the steam is formed.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is;

1. The combination in a smelting-furnace of a crucible, a series of water-jacket sections located above the crucible forming an inclosure, said jacket-sections extending one above the other in vertical series, a series of watertubes surrounding the furnace interior to the water-jacket sections, a water -supply surrounding the base of the furnace, a steamdrutn surrounding the upper part, and means for connecting the interior water-tubes and the exterior water-supply and steam-drum.

2. The combination with a smelting-furnace of a water-jacket section located above the crucible, a second Water-jacket section extending upwardly above the first-named 'section with a space or channel formed between said sections, water-pipes surrounding the furnace interior to the water-jacket sections, the lower ends of said pipes extending outwardly through the interspace between the sections, a feed-water pipe exterior to the water-jacket sections with which the lower ends of the tubes connect, a steam-drum surrounding the upper part of the furnace, said Water-tubes connecting with the steam-drum above the water-jacket section and a pipe connecting the steam-drum and the feed-pipe whereby a circulation is maintained through the apparatus.

3. The combination in a smelting-furnace of a crucible, a rectangular water-jacket located above the crucible, a second waterjacket continuing upward essentially in the planes of the first-named jacket having an annular space or channel between the jacketsections, said sections being curved or beveled as shown, vertically-disposed pipes located' within the water-jacket sections connecting with the exterior steam-drum above and having the lower ends extending outwardly through the channel between the wa ter-jackets and a feed-water pipe with which the lower ends of the tubes are connected.

4:. The combination in a smelting-furnace of a crucible, a superposed water-jacket section having the upper edge beveled or inclined outwardly, a second section essentially in the plane above the first section and having its lower edge curved or beveledinwardly, a feed-water pipe surrounding the lower part of the furnace, a steam-drum surrounding the upper part, approximately vertical watertubes disposed within the water-jacket sections and separated from each other, said tubes having the upper ends extending outwardly over the top of the upper water-jacket section and connections between said tubes and the steam-drum extensions of the lower ends of the tubes through the space between the first and second water-jacket sections and connections between said lower ends and the feed-water-supply pipe.

5. A smelting-furnace, having a series of essentially vertical interspaced tubes inclosing the fu rnace, superposed water-jacket sections inclosing said tubes and forming a continuation of the furnace upwardly from the crucible, a beveled space or channel between the first and second sections of the waterjacket through which the lower ends of the tubes pass outwardly, a feed-water-supply pipe surrounding the furnace with which the lower ends of the tubes are connected, a steam-drum surrounding the upper part of the furnace and connections between the upper ends of the water-tubes and said steamdrum.

In witness whereof I have hereunto set my hand.

JOSEPH L. GIROUX. 'Witnesses:

11. R. BROWN,

JUSTIN FRASER. 

